Over the years I've peed standing up twice. Once to use a urinal in a mens room and again to pee on a tree.
I don't remember what started it but I told my husband I could do anything he could.
At the time he was peeing on a tree and said I couldn't do that.
I had to prove him wrong. We were out in the woods on a trail. I took my jeans and panties off and walked up to a tree. I spread my legs around the tree and had my tw*t against it. I peed right on the treeold you so"
This dosn't count the times I've peed in a pool or the river.
When I pee in a pool or the river I wade out about waist deep and pull my bottoms down to mid thigh and pee standing in the water